student asking question

Is it okay not to put any article like "an" or "the" in front of "extended period"?

teacher

Native speaker’s answer

Rebecca

Yes, that's correct. Because "periods" here is plural, an article isn't necessary. If "period" was in the singular form, the article "an" would be needed here. Ex: They can go extended periods of time without water. = They can go an extended period of time without water.

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